Donald Trump has been accusing China of intervening in the upcoming election in the United States, attributing their involvement to ensuring he doesn't win his re-election bid this year. Former vice president Joe Biden and a slew of other Democrats suggest the president is taking Russia's help to defame his opponent.

While these were mere allegations, Microsoft on Thursday confirmed that hackers from Russia, China, and Iran have tried to hack people, as well as organizations involved in the US presidential election. This revelation sheds more light on Chinese and Iranian attempts to break into the United States political campaigns and suggests that Russian hacking efforts have continued at a rate of knots.

The recently announced activity confirms that foreign activity groups have expedited their attempts to target the 2020 election, Microsoft said in a blog post, published on Sept. 10. Top US cybersecurity officials have revealed that Microsoft detected efforts to imperil email accounts of organization and people associated with the presidential race, but said there is no evidence that implies those attempts affected the election systems.

Director of the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency Chris Krebs noted that none of the targeted people were involved in either operating or maintaining voting infrastructure. Krebs also said in a statement to CNN that no impact on election systems was identified.

The tech giant said the same Russian hacking group that was identified by US prosecutors as attackers on the Democratic presidential campaign in 2016, had recently targeted national and state parties in the country, along with consultants who work for Democrats and Republicans. Aside from that, Microsoft also said the Russians have upgraded their tactics since 2016, and now resort to using automated "brute force" attacks as well.

The report revealed that the Russian group targeted over 200 organizations, many of which it said were indirectly or directly affiliated with the impending U.S. election and political and policy-related organizations in Europe. Microsoft did not divulge details about the number of organizations that Chinese and Iranian groups targeted.

Chinese hackers targeted Democratic presidential nominee Joe Biden's campaign, while at least one person known to be a part of President Donald Trump's administration in the past was targeted. Iranian hackers have attempted to log into the accounts of Trump campaign staff and Trump administration officials between May and June this year.